Self locking roller, tire, and tread foundation



Nov. 20, 1956 J. G. STRECKFUS ET AL 2,770,868

SELF LOCKING ROLLER, TIRE AND TREAD FOUNDATION Filed July 2, 1952 14 19i E /9 7 Z9 k /6 E /8 WELDED L215 ,8

IN VEN TOR. J'oH/v G. STEECKFUS.

HHJQRY Goow/N.

United States Patent SELF LOCKING ROLLER, TIRE, AND TREAD FOUNDATIONThis invention refers to resilient rollers and treads and moreparticularly to those mounted on a metal foundation for use as vehiclewheels, tractor treads and for conveying sheets of material and the likethrough coating tanks subject to various temperatures and for use indistributing systems which feed ink from a supply, break it up into afilm of uniform thickness and consistency, and transfer this ink to aprinting surface.

Resilient faced rolls or tires and treads have been mounted on cores andfoundations for the above mentioned purposes, but much difliculty hasbeen experienced in securing and holding the facing to the foundation orcore and the joint usually breaks down and allows the resilient materialto separate from the foundation or core due to the stresses of contactand heat under which it operates.

It is therefore an object of this invention to provide a new andimproved resilient faced roller or tread mounted on a metal foundationhaving helical undercuts of thread form in its contacting face tomechanically lock the resilient facing to the foundation.

It is an additional object of this invention to provide a new andimproved foundation with under-cuts positioned in its face and spacedmetal strips positioned longitudinally on the face of the foundation toform a mechanical lock to hold a resilient casing thereto, and preventbreaking the bond between the casing and foundation.

An additional object of this invention is to provide a new and improvedarticle of manufacture comprising a metal foundation provided withgrooves positioned in its face, straps longitudinally positioned on thesurface of the foundation and permanently afiixed thereto in spacedrelation to each other.

It is an additional object of this invention to provide a new andimproved foundation support for resilient rollers comprising placing aseries of under-cuts in the face of the foundation, and slats positionedlongitudinally along the surface of the foundation in spaced relation toeach other.

Other objects will become apparent as the invention is more fully setforth.

For a clearer understanding of the invention and the objects thereof,reference is made to the accompanying drawings, wherein a particularform of the invention is indicated. These drawings when used inconjunction with the following description serve to illustrate theinvention, its principles and the operation thereof, while the claimsindicate the scope thereof.

In the drawings:

Figure 1 is a side elevation of a roller provided with the mechanicallocking means embodying this invention for holding the resilient casingto the foundation, with parts broken away to show its innerconstruction;

Figure 2, is a sectional view taken along line 2-2 of Figure 1;

' Patented Nov. 20, 1956 Figure 3 is a side elevation of a modifiedlocking means for holding the resilient casing to the foundation, withparts broken away to show its inner construction;

7 Figure 4 shows the mechanical locking means applied to the wheel of amotor vehicle for holding the resilient tire thereon;

Figure 5 shows another application of the mechanical lock for holdingthe resilient treads on tractor belts; and

Figure 6 is a side view of Figure 5.

Similar reference characters refer to similar palrts throughout thedrawings.

In the construction shown in the drawings a foundation 10 is providedwith journals 11. The enlarged portion 12 of the foundation is providedwith longitudinally spaced annular grooves 13 to provide longitudinalanchor means to prevent the longitudinal movement of the resilientmaterials. Straps 14 are secured to the outer face of the foundation bywelding to prevent the resilient material or facing 15 from pulling outof the grooves and causing a mechanical failure to the resilient toller,tire or tread.

Figure 3 shows a modified foundation 18 provided with journals 19 at itsends and grooves or slots 16 having dovetail portions 17 to form a keyto hold the resilient material 20 against longitudinal .and transversemovement on the foundation 18 and prevent failure of the device themechanical locking means is used with. The flared groove or under-cuteliminates the use of the longitudinally placed straps 14 in manyinstallations and also prevents longitudinal and transverse movement ofthe resilient material along the foundation.

Figure 4 shows a method for holding a resilient tire to an automobiletruck wheel wherein the tire 21 is provided with dovetails 22 that fitinto similarly shaped dovetailed slots 23 in the wheel 24, and dove tailkeys 25 project into and fit into dove-tailed slots 26 in the tire 21.

Figure 5 shows a method for holding resilient treads 27 to a tractorbelt 28 through the use of slots 29 placed "in the tractor belt 28 toanchor the belt against longitudinal movement and straps 30 fastened tothe face of the tractor belt or foundation prevent the treads 27 frommechanically separating from the foundation or tractor belt.

While several forms of the invention are shown in the drawings anddescribed in the specification, it is not desired to limit thisapplication for patent to these particular forms as it is appreciatedthat other forms of construction could be made that would use the sameprinciples and come within the scope of the appended claims.

Having thus described the invention, what is claimed is:

1. In a device of the kind described, a foundation having a longitudinalaxis and a circular cross-section normal to said axis, said foundationhaving slots on the periphery thereof, a resilient tread peripherallysecured to said foundation, and straps separate and independent from thefoundation and extending longitudinally and internally of said tread andlongitudinally and externally of said foundation, said straps beingattached to the outer face of the foundation and directly abutting thefoundation of said straps prevent-ing the disengagement of the treadfrom the slots.

2. A device of the kind set forth in claim 1 wherein the slots arehelically arranged around the periphery of the foundation.

3. A device as set forth in claim 1 wherein the slots are spacedannularly around the periphery of the foundation.

(References on following page) References(Iitdin'thvfile of this patentUNITED" STATES PATENTS Bailey June 24, 1862 MDonald Apr. 11;.1871Jacksom Apr; 21; 1903 Dana July- 14, 1903i Appletonhnn; Oct: 10; .1905Trauhu Oct. 9, 1906 Furbush Jilly 5, 1910 Stewart; Sept, 1611913 ReedJuly 19, 1921 Ma11oy- 2 Mar. 16, 1926 Manly Nov. 4, 1930 Wittkopp July15, 1937 Shoup Feb. 11, 1941 Schuster Sept. 23, 1941 Cosmos May 26, 1953FOREIGN: PATENTS Great Biitain Aug. 26, 1884

